Egg Production

Hi everyone, I have 5 month old Pekins, Tuffed heads, runners. Questions is a few weeks ago I got a huge egg! Woohoo! Then nothing for a week, now I'm getting a smaller egg ( I assume is my little tuffed head girl because of the size) every day. Do you think I need to add calcium to their diet? They are on a grower mix now. The shells of eggs I did get are fine nice, and thick. Any help is greatly appreciated.

Just make sure they have free-choice food, free-choice oyster-shell, and see at least 14 hours of daylight or daylight + adequately bright lighting per day. That will help encourage them to be in a productive mood.